Yale asks for other academic examinations besides The College Board's, but I don't have too many...

In the Common App, Yale asks for any additional tests I’ve taken or will take. Several friends of mine who are or have applied to Yale included several tests like the AMC or other Math Competitions, Science Olympiads, National Language Exams, NACLO (Linguistics), the list goes on. I’m not sure how much weight additional testing carries to strengthen my application, and all I can do is hope it won’t hurt if I don’t have any. How much do they matter?

SATII subject tests matter. The others you listed only matter if the individual does exceptionally well.

It’s ok if you don’t have any of the others, right?
Thanks!

^ yes, it’s okay if you don’t have those “other” tests. DS got accepted without them.

“Other” tests can include ordinary standardized tests from outside the US as well.